/**
 * 
 */
package jvs.peer;

import java.util.Collection;

import org.jivesoftware.smack.RosterListener;
import org.jivesoftware.smack.packet.Presence;

/**
 * @author qiangli
 *
 */
public abstract class PresenceListener implements RosterListener {
	public void entriesAdded(Collection<String> addresses) {}

	public void entriesUpdated(Collection<String> addresses) {}

	public void entriesDeleted(Collection<String> addresses) {}

	public abstract void presenceChanged(Presence presence);
}
